Box splint



FIG. 1 is a perspective view of a box splint showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a side elevational view thereof, looking toward the right sidethereof;

FIG. 4 is a side elevational view thereof, looking toward the left sidethereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a bottom plan view thereof.

The ornamental design for a box splint, substantially as shown.